webpack: Warning "There is another module with a equal name when case is ignored."

I have found the answer. In a file, I made a typo:

var fluxxor = require('Fluxxor');    //should be require('fluxxor')

The filesystem is case-insensitive, so webpack will compile the same file twice.

Thanks for the help, this fixed my problem…after a lot of searching. This warning message should be a lot smarter and should actually point to the problematic line in question, enough with this guessing wizardry shit…

Thank you so much for sharing.

In my case, I did

import React from 'React';

😦

确实是这样的，我用的是import，把后面要引入的模块改为小写就行了

really can’t believe how this error message doesn’t show the file where it was detected, makes me afraid to refactor

文件夹名为 fluxxor 进入的 时候 却以 Fluxxor 引入， var fluxxor = require(‘Fluxxor’); //should be require(‘fluxxor’)

大小写不一造成的， （英文看不懂，我翻译了 上面那哥们儿的回复）

As others have mentioned, please improve the error message and make it possible to suppress the warning to avoid huge log outputs of file path to every single source file.

This warning should be very much explicit for a simple problem like that. It lacks the file where the problem have been found…

I had this warning also. It took me two hours to find it. I am on a Mac. What I did, was delete the module in question. Empty my trash. Re-create the module from scratch.

Then I ran flow, which took me straight to the actual error.

Before this “delete the file and empty the trash” exercise, Flow was not reporting the bug. Only webpack was reporting the error. But webpack’s error was not helpful.

So it sounds like some kind of file system issue?

problem(Error case): WARNING in ./components/common/NoData.jsx There is another module with an equal name when case is ignored. This can lead to unexpected behavior when compiling on a filesystem with other case-semantic. Rename module if multiple modules are expected or use equal casing if one module is expected. Answer: It is a kind of Warning, Remind us of right writing(case-semantic). Answer(Right case): ./component/Common/NoData.jsx.

quick search through all my files for each version of the file it reports but in lowercase (it was reporting it in a file as Uppercase found the two references where I’d got the wrong case. Luckily I’m on windows (although some of you will laugh at the lucky part) so its not case sensitive but I wanted the warning message to disappear 😃

Example:

Filename is actually: Price.jsx

searched for: price.jsx to find the references it was complaining about.